<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="Constants used in rCore"><metaname="keywords"content="rust, rustlang, rust-lang, config"><title>os::config - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Regular.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Medium.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Bold.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Semibold.ttf.woff2"><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><scriptid="default-settings"></script><scriptsrc="../../storage.js"></script><scriptdefersrc="../../main.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="alternate icon"type="image/png"href="../../favicon-16x16.png"><linkrel="alternate icon"type="image/png"href="../../favicon-32x32.png"><linkrel="icon"type="image/svg+xml"href="../../favicon.svg"></head><bodyclass="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle">☰</button><aclass="sidebar-logo"href="../../os/index.html"><divclass="logo-container"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></div></a><h2class="location"></h2></nav><navclass="sidebar"><aclass="sidebar-logo"href="../../os/index.html"><divclass="logo-container"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></div></a><h2class="location"><ahref="#">Module config</a></h2><divclass="sidebar-elems"><section><divclass="block"><ul><li><ahref="#reexports">Re-exports</a></li><li><ahref="#constants">Constants</a></li><li><ahref="#functions">Functions</a></li></ul></div></section></div></nav><main><divclass="width-limiter"><divclass="sub-container"><aclass="sub-logo-container"href="../../os/index.html"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></a><navclass="sub"><formclass="search-form"><divclass="search-container"><span></span><inputclass="search-input"name="search"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><divid="help-button"title="help"tabindex="-1"><buttontype="button">?</button></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../wheel.svg"></a></div></div></form></nav></div><sectionid="main-content"class="content"><divclass="main-heading"><h1class="fqn"><spanclass="in-band">Module <ahref="../index.html">os</a>::<wbr><aclass="mod"href="#">config</a><buttonid="copy-path"onclick="copy_path(this)"title="Copy item path to clipboard"><imgsrc="../../clipboard.svg"width="19"height="18"alt="Copy item path"></button></span></h1><spanclass="out-of-band"><aclass="srclink"href="../../src/os/config.rs.html#1-19">source</a> · <aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass="inner">−</span>]</a></span></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Constants used in rCore</p>
</div></details><h2id="reexports"class="small-section-header"><ahref="#reexports">Re-exports</a></h2><divclass="item-table"><divclass="item-row"><divclass="item-left import-item"id="reexport.CLOCK_FREQ"><code>pub use crate::board::<aclass="constant"href="../board/constant.CLOCK_FREQ.html"title="constant os::board::CLOCK_FREQ">CLOCK_FREQ</a>;</code></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left import-item"id="reexport.MMIO"><code>pub use crate::board::<aclass="constant"href="../board/constant.MMIO.html"title="constant os::board::MMIO">MMIO</a>;</code></div><divclass="item-right docblock-short"></div></div></div><h2id="constants"class="small-section-header"><ahref="#constants">Constants</a></h2><divclass="item-table"><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.KERNEL_HEAP_SIZE.html"title="os::config::KERNEL_HEAP_SIZE constant">KERNEL_HEAP_SIZE</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.KERNEL_STACK_SIZE.html"title="os::config::KERNEL_STACK_SIZE constant">KERNEL_STACK_SIZE</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.MEMORY_END.html"title="os::config::MEMORY_END constant">MEMORY_END</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.PAGE_SIZE.html"title="os::config::PAGE_SIZE constant">PAGE_SIZE</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.PAGE_SIZE_BITS.html"title="os::config::PAGE_SIZE_BITS constant">PAGE_SIZE_BITS</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.TRAMPOLINE.html"title="os::config::TRAMPOLINE constant">TRAMPOLINE</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.TRAP_CONTEXT.html"title="os::config::TRAP_CONTEXT constant">TRAP_CONTEXT</a></div><divclass="item-right docblock-short"></div></div><divclass="item-row"><divclass="item-left module-item"><aclass="constant"href="constant.USER_STACK_SIZE.html"title="os::config::USER_STACK_SIZE constant">USER_STACK_SIZE</a></div><divclass="item-right docblock-short"></div></div></div><h2id="functions"class="small-section-header"><ahref="#functions">Functions</a></h2><divclass="item-table"><divclass="item-row"><divclass="item-left module-item"><aclass="fn"href="fn.kernel_stack_position.html"title="os::config::kernel_stack_position fn">kernel_stack_position</a></div><divclass="item-right docblock-short"><p>Return (bottom, top) of a kernel stack in kernel space.</p>